| ITIndustrial Tube Components, Inc | Lizton | IN | — | ◇ UNVERIFIED |
| ILIndustries Little York LLC | Houston | TX | — | ◇ UNVERIFIED |
| IMIndutech Machine Shop | San Lorenzo | PR | — | ◇ UNVERIFIED |
| ICIndy Custom Machine, INC. | Indianapolis | IN | — | ◇ UNVERIFIED |
| IFInfinity Fabrication, INC | Arlington | WA | — | ◇ UNVERIFIED |
| IMInfinity Manufactured Industries, INC. | Largo | FL | — | ◇ UNVERIFIED |
| IIInfitech Industries, INC. | Eastlake | OH | — | ◇ UNVERIFIED |
| ICInfra-metals CO. | Marseilles | IL | — | ◇ UNVERIFIED |
| IIInko Industrial Corporation | Sunnyvale | CA | — | ◇ UNVERIFIED |
| IMInland Machine and Welding CO. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| IIInnex Innovative Industries | Rochester | NY | — | ◇ UNVERIFIED |
| ILInnofab LLC | Milwaukee | WI | — | ◇ UNVERIFIED |
| ICInnotek Corporation | Maple Grove | MN | — | ◇ UNVERIFIED |
| IMInnovated Machine & Tool Co., INC. | Newport News | VA | — | ◇ UNVERIFIED |
| IMInnovated Metal Fabrication Inc | Maplewood | MN | — | ◇ UNVERIFIED |
| IMInnovated Metal Fabrication Inc | Maplewood | MN | — | ◇ UNVERIFIED |
| IMInnovated Metal Fabrication INC | Blaine | MN | — | ◇ UNVERIFIED |
| IAInnovation Alley | Fresno | CA | — | ◇ UNVERIFIED |
| IEInnovative Emergency Equipment | Riverside | CA | — | ◇ UNVERIFIED |
| IIInnovative Industrial | Brownsville | TX | — | ◇ UNVERIFIED |
| IIInnovative Industrial Fabricators LLC | Keithville | LA | — | ◇ UNVERIFIED |
| IMInnovative Machine Corporation | Birmingham | AL | — | ◇ UNVERIFIED |
| IMInnovative Machine INC. | Geneseo | IL | — | ◇ UNVERIFIED |
| IMInnovative Machine & Industrial Services INC | Prince George | VA | — | ◇ UNVERIFIED |
| IMInnovative Machining Services INC | Kansas City | MO | — | ◇ UNVERIFIED |
| IMInnovative Machining Solutions Inc. | Vienna | ME | — | ◇ UNVERIFIED |
| ISInnovative Sheet Metals LLC | Bradenton | FL | — | ◇ UNVERIFIED |
| IMInox Market America | Muncie | IN | — | ◇ UNVERIFIED |
| ITInsituform Technology | Wrentham | MA | — | ◇ UNVERIFIED |
| ISIns Specialties, LLC | Claremore | OK | — | ◇ UNVERIFIED |
| ICInsulated Component Structures of Fl, INC. | Eustis | FL | — | ◇ UNVERIFIED |
| IAIntec Automation | Rochester | NH | — | ◇ UNVERIFIED |
| IIIntech INC | Acton | MA | — | ◇ UNVERIFIED |
| IMIn-tech Manufacturing LLC | Houston | TX | — | ◇ UNVERIFIED |
| IEIntegral Engineering & Fabrication INC | City of Industry | CA | — | ◇ UNVERIFIED |
| IDIntegrated Dynamic Metals Corp | Marlborough | MA | — | ◇ UNVERIFIED |
| IEIntegrated Employer Solutions INC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| IFIntegrated Fabrication & Machine, INC. | Sharpsville | PA | — | ◇ UNVERIFIED |
| IMIntegrated Manufacturing Group | Las Vegas | NV | — | ◇ UNVERIFIED |
| IMIntegrated Manufacturing Solutions LLC | Shakopee | MN | — | ◇ UNVERIFIED |
| IMIntegrated Mechanical INC | Albany | OR | — | ◇ UNVERIFIED |
| ISIntegrated Steel | Brooksville | FL | — | ◇ UNVERIFIED |
| ITIntegrated Tower Systems | Tulsa | OK | — | ◇ UNVERIFIED |
| ITIntegrated Turbo Machinery INC | Vallejo | CA | — | ◇ UNVERIFIED |
| IFIntegrity Fleet Services | Pacific | WA | — | ◇ UNVERIFIED |
| IMIntegrity Machine and Supply, LLC | Odessa | TX | — | ◇ UNVERIFIED |
| IMIntegrity Machine and Supply, LLC | Odessa | TX | — | ◇ UNVERIFIED |
| IMIntegrity Machine Works, LLC | Houma | LA | — | ◇ UNVERIFIED |
| IMIntegrity Manufacturing LLC | Hubbard | OR | — | ◇ UNVERIFIED |
| IPIntegrity Precision Products Inc. | Northvale | NJ | — | ◇ UNVERIFIED |
| ITIntegrity Tool INC. | Ontario | NY | — | ◇ UNVERIFIED |
 Integrity Welding & Fabrication, INC. | Colorado Springs | CO | — | ◇ UNVERIFIED |
| IFIntelligent Fixtures | El Monte | CA | — | ◇ UNVERIFIED |
| IMIntelligent Machine Solutions INC | Norton Shores | MI | — | ◇ UNVERIFIED |
| ISIntelligent Steel Solutions, L.l.c. | New Orleans | LA | — | ◇ UNVERIFIED |
| ITIntelligent Tool CORP. | Mooresville | NC | — | ◇ UNVERIFIED |
| IIIntellimetal, INC. | Rochester | NY | — | ◇ UNVERIFIED |
| IAInter American Oil Works INC. | Odessa | TX | — | ◇ UNVERIFIED |
| IIInterlock Industries, INC. | Independence | MO | — | ◇ UNVERIFIED |
| ICIntermountain Concrete Specialties | Idaho Falls | ID | — | ◇ UNVERIFIED |
| IMInternational Machine & Tool INC | Hendersonville | TN | — | ◇ UNVERIFIED |
| ISInternational Steel & Counterweights LLC | Youngstown | OH | — | ◇ UNVERIFIED |
| ISInternational Steel Framing | League City | TX | — | ◇ UNVERIFIED |
| IMInterstate Machine Works | Ringgold | GA | — | ◇ UNVERIFIED |
| IMInterstate Manufacturing INC | Portland | OR | — | ◇ UNVERIFIED |
| IFIntersteel Fabrication INC | Louisville | KY | — | ◇ UNVERIFIED |
| ISIntl Special Attractions LLC | Puyallup | WA | — | ◇ UNVERIFIED |
| IGIntricate Grinding & Machine Specialties | Norton Shores | MI | — | ◇ UNVERIFIED |
| IMIntricate Manufacturing Company | Lynchburg | VA | — | ◇ UNVERIFIED |
| IIInventitives INC | Buffalo | MN | — | ◇ UNVERIFIED |
| ITIowa Techniques, INC. | Hutto | TX | — | ◇ UNVERIFIED |
| IMIpa Machining LLC | Casper | WY | — | ◇ UNVERIFIED |
| IIIpeg INC | Pinconning | MI | — | ◇ UNVERIFIED |
| IPIpp-improved Piping Products, INC. | San Antonio | TX | — | ◇ UNVERIFIED |
| IBIpsco Baytown Works | Baytown | TX | — | ◇ UNVERIFIED |
| ISIqm Solutions, LLC | Antioch | IL | — | ◇ UNVERIFIED |
| ITIrmko Tool Works, INC. | Bensenville | IL | — | ◇ UNVERIFIED |
| IOIrmw of Colorado, INC. | Aspen | CO | — | ◇ UNVERIFIED |
| IAIron Access, INC. | Houston | TX | — | ◇ UNVERIFIED |
| ICIron City Iron Works Inc | Tarrant | AL | — | ◇ UNVERIFIED |
| ICIron Crafters Security Products Inc | Ashland | MS | — | ◇ UNVERIFIED |
| IDIron Dog Fabrication INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| IEIron Edge Mfg., LLC | Prescott | AZ | — | ◇ UNVERIFIED |
| ILIronfab, LLC | Columbus | OH | — | ◇ UNVERIFIED |
| IFIron Fabrication Services, INC. | Jessup | MD | — | ◇ UNVERIFIED |
| IFIron Fence Specialists, INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| IIIronhead INC | Vale | OR | — | ◇ UNVERIFIED |
| IIIron Integrity LLC | Hayden | CO | — | ◇ UNVERIFIED |
| ILIronluxe, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| IOIronsmiths of Distinction, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| IFIronwood Fabrication LLC | Bellingham | WA | — | ◇ UNVERIFIED |
| IWIron Works, INC. | Denton | MD | — | ◇ UNVERIFIED |
| IWIron Works, INC. | Milford | DE | — | ◇ UNVERIFIED |
| IHIroquois Hoods and Cabinets LLC | Muskegon | MI | — | ◇ UNVERIFIED |
| ILIsbell Lifts LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| IFIsland Forest Industrial, L.l.c. | Lincolnton | NC | — | ◇ UNVERIFIED |
| IIIsland Industries, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| IMIsland Machine Works INC | Galveston | TX | — | ◇ UNVERIFIED |
| ITIsland Tool and Die INC | Pine Island | MN | — | ◇ UNVERIFIED |
| ITIsometric Tool & Design | New Richmond | WI | — | ◇ UNVERIFIED |
